将Express应用部署到Azure应用服务未响应端口：8080上的HTTP ping

Question

我尝试将我的NestJs应用程序（使用快速适配器）部署到Azure应用服务。在docker日志我得到这个错误：

2020-11-20T10:42:02.911Z INFO  - docker run -d -p 8947:8080 --name xxx_0_37a36398 -e WEBSITES_PORT=8080 -e WEBSITE_SITE_NAME=xxx -e WEBSITE_AUTH_ENABLED=False -e WEBSITE_ROLE_INSTANCE_ID=0 -e WEBSITE_HOSTNAME=xxx.azurewebsites.net -e WEBSITE_INSTANCE_ID=xxx appsvc/node:14-lts_20200918.1 yarn start:prod 

2020-11-20T10:42:02.912Z INFO  - Logging is not enabled for this container.
Please use https://aka.ms/linux-diagnostics to enable logging to see container logs here.
2020-11-20T10:42:05.088Z INFO  - Initiating warmup request to container xxx_0_37a36398 for site xxx
2020-11-20T10:42:20.586Z INFO  - Waiting for response to warmup request for container xxx_0_37a36398. Elapsed time = 15.4982001 sec
2020-11-20T10:48:35.794Z INFO  - Waiting for response to warmup request for container xxx_0_37a36398. Elapsed time = 390.7060158 sec
2020-11-20T10:56:21.027Z INFO  - Waiting for response to warmup request for container xxx_0_37a36398. Elapsed time = 855.9388558 sec
2020-11-20T11:04:08.996Z INFO  - Waiting for response to warmup request for container xxx_0_37a36398. Elapsed time = 1323.907606 sec
2020-11-20T11:11:55.596Z INFO  - Waiting for response to warmup request for container xxx_0_37a36398. Elapsed time = 1790.5073044 sec
2020-11-20T11:12:25.625Z ERROR - Container xxx_i_0_37a36398 for site xxx did not start within expected time limit. Elapsed time = 1820.5363685 sec
2020-11-20T11:12:25.627Z ERROR - Container xxx_0_37a36398 didn't respond to HTTP pings on port: 8080, failing site start. See container logs for debugging.
2020-11-20T11:12:25.637Z INFO  - Stopping site xxx because it failed during startup.

应用程序日志显示应用程序启动成功

2020-11-20T10:42:05.150205868Z   _____                               
2020-11-20T10:42:05.150227670Z   /  _  \ __________ _________   ____  
2020-11-20T10:42:05.150232970Z  /  /_\  \___   /  |  \_  __ \_/ __ \ 
2020-11-20T10:42:05.150237271Z /    |    \/    /|  |  /|  | \/\  ___/ 
2020-11-20T10:42:05.150241271Z \____|__  /_____ \____/ |__|    \___  >
2020-11-20T10:42:05.150245371Z         \/      \/                  \/ 
2020-11-20T10:42:05.150249272Z A P P   S E R V I C E   O N   L I N U X
2020-11-20T10:42:05.150252972Z 
2020-11-20T10:42:05.150256472Z Documentation: http://aka.ms/webapp-linux
2020-11-20T10:42:05.150260173Z NodeJS quickstart: https://aka.ms/node-qs
2020-11-20T10:42:05.150263673Z NodeJS Version : v14.7.0
2020-11-20T10:42:05.150267273Z Note: Any data outside '/home' is not persisted
2020-11-20T10:42:05.150270874Z 
2020-11-20T10:42:05.388794060Z Cound not find build manifest file at '/home/site/wwwroot/oryx-manifest.toml'
2020-11-20T10:42:05.389362508Z Could not find operation ID in manifest. Generating an operation id...
2020-11-20T10:42:05.389393011Z Build Operation ID: 5488a73a-f6e1-48d5-9360-7d4e0db141f4
2020-11-20T10:42:06.033354810Z Environment Variables for Application Insight's Codeless Configuration exists..
2020-11-20T10:42:06.603097828Z Writing output script to '/opt/startup/startup.sh'
2020-11-20T10:42:06.946048753Z Running #!/bin/sh
2020-11-20T10:42:06.946644503Z 
2020-11-20T10:42:06.946657204Z # Enter the source directory to make sure the script runs where the user expects
2020-11-20T10:42:06.946662305Z cd "/home/site/wwwroot"
2020-11-20T10:42:06.946666105Z 
2020-11-20T10:42:06.947939813Z export NODE_PATH=/usr/local/lib/node_modules:$NODE_PATH
2020-11-20T10:42:06.947952014Z if [ -z "$PORT" ]; then
2020-11-20T10:42:06.947956114Z      export PORT=8080
2020-11-20T10:42:06.949015304Z fi
2020-11-20T10:42:06.954862399Z 
2020-11-20T10:42:06.954927704Z export NODE_OPTIONS='--require /usr/local/lib/node_modules/applicationinsights/out/Bootstrap/Oryx.js ' $NODE_OPTIONS
2020-11-20T10:42:06.954986409Z PATH="$PATH:/home/site/wwwroot" yarn start:prod
2020-11-20T10:42:08.321443397Z yarn run v1.17.3
2020-11-20T10:42:08.484387733Z $ node dist/src/main 
[...]
2020-11-20T10:42:23.394152218Z Application started on port 8080

我用这行代码绑定express服务器

 const port = Number(process.env.PORT) || 8080;

我已经谷歌了一段时间来寻找解决方案，但没有任何帮助。以下是我现在尝试的步骤。

• 增加WEBSITES_CONTAINER_START_TIME_LIMIT到1800
• 设置WEBSITES_PORT和PORT设置为80
• 重新创建和重新部署应用程序

有人知道为什么这个问题仍然存在吗？我的应用程序在右边的端口上列出，在/下返回200 Http状态，并且还实现了400错误处理程序（我已经了解到这个云也是一个问题）。

Answer 1

来源于https://docs.microsoft.com/azure/app-service/faq-app-service-linux#custom-容器

我的自定义容器监听端口80以外的端口。如何配置应用以将请求路由到该端口？

我们有自动端口检测。您还可以指定一个名为“U端口”的应用程序设置，并为其指定预期端口号的值。以前，平台使用端口应用程序设置。我们计划不推荐此应用程序设置，并专门使用网站\u端口。

您不需要使用端口变量。自动端口检测检测端口（默认为端口80），我们将尝试检测要绑定到容器的端口，但您也可以使用端口应用程序设置，并使用要绑定到容器的端口的值对其进行配置。但是，自定义映像中的web服务器可能使用80以外的端口。您可以通过使用Web\u端口应用程序设置告知Azure您的自定义容器使用的端口。对于使用不同的端口-使用Dockerfile中的EXPOSE指令公开相应的端口（例如5000），并使用Azure上的Web\u port app设置（值为“5000”）公开该端口。

Answer 2

你会用哨兵吗？我们有一个类似的问题，并能够追溯到哨兵。在没有Sentry和默认配置的情况下尝试。